Dust-collecting machine



FIG. 1 is a perspective view of a dust-collecting machine showing my newdesign;

FIG. 2 is a front side elevational view thereof;

FIG. 3 is a rear side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

I claim the ornamental design for a dust-collecting machine, as shownand described.